// JavaScript Document
jQuery
	.extend({
		handleError : function(s, xhr, status, e) {
			if (s.error) {
				s.error.call(s.context || s, xhr, status, e);
			}
			if (s.global) {
				(s.context ? jQuery(s.context) : jQuery.event).trigger("ajaxError", [ xhr, s, e ]);
			}
		},

		createUploadIframe : function(id, uri) {
			// create frame
			var frameId = 'jUploadFrame' + id;

			if (window.ActiveXObject) {
				var io = document.createElement('<iframe id="' + frameId
					+ '" name="' + frameId + '" />');
				if (typeof uri == 'boolean') {
					io.src = 'javascript:false';
				} else if (typeof uri == 'string') {
					io.src = uri;
				}
			} else {
				var io = document.createElement('iframe');
				io.id = frameId;
				io.name = frameId;
			}
			io.style.position = 'absolute';
			io.style.top = '-1000px';
			io.style.left = '-1000px';

			document.body.appendChild(io);

			return io;
		},
		createUploadForm : function(id, fileElementId, data) {
			// create form
			var formId = 'jUploadForm' + id[0];
			var fileId = 'jUploadFile' + id[0];
			var form = jQuery('<form  action="" method="POST" name="'
				+ formId + '" id="' + formId
				+ '" enctype="multipart/form-data"></form>');
				//				var oldElement = jQuery('#' + fileElementId);
				//				var newElement = jQuery(oldElement).clone();
				//				jQuery(oldElement).attr('id', fileId);
				//				jQuery(oldElement).before(newElement);
				//				jQuery(oldElement).appendTo(form);
			alert(fileElementId.length);
			for (var i = 0; i < fileElementId.length; i++) {
				if(fileElementId[i]!=null && fileElementId[i]!=""){
					var oldElement = jQuery('#' + fileElementId[i]);
					var newElement = jQuery(oldElement).clone();
					jQuery(oldElement).attr('id', fileElementId[i]);
					jQuery(oldElement).attr('name', fileElementId[i]);
					jQuery(oldElement).before(newElement);
					jQuery(oldElement).appendTo(form);
				}
				
			}
			// set attributes
			jQuery(form).css('position', 'absolute');
			jQuery(form).css('top', '-1200px');
			jQuery(form).css('left', '-1200px');

			if (data) {
				for (var i in data) {
					$('<input type="hidden" name="' + i + '" value="' + data[i] + '" />').appendTo(form);
				}
			}

			jQuery(form).appendTo('body');
			return form;
		},

		ajaxFileUpload : function(s) {
			// TODO introduce global settings, allowing the client to modify
			// them for all requests, not only timeout
			s = jQuery.extend({}, jQuery.ajaxSettings, s);
			var id = s.fileElementId;
			var form = jQuery.createUploadForm(id, s.fileElementId, s.data);
			var io = jQuery.createUploadIframe(id, s.secureuri);
			var frameId = 'jUploadFrame' + id;
			var formId = 'jUploadForm' + id;

			if (s.global && !jQuery.active++) {
				// Watch for a new set of requests
				jQuery.event.trigger("ajaxStart");
			}
			var requestDone = false;
			// Create the request object
			var xml = {};
			if (s.global) {
				jQuery.event.trigger("ajaxSend", [ xml, s ]);
			}

			var uploadCallback = function(isTimeout) {
				// Wait for a response to come back
				var io = document.getElementById(frameId);
				try {
					if (io.contentWindow) {
						xml.responseText = io.contentWindow.document.body ? io.contentWindow.document.body.innerHTML
							: null;
						xml.responseXML = io.contentWindow.document.XMLDocument ? io.contentWindow.document.XMLDocument
							: io.contentWindow.document;

					} else if (io.contentDocument) {
						xml.responseText = io.contentDocument.document.body ? io.contentDocument.document.body.innerHTML
							: null;
						xml.responseXML = io.contentDocument.document.XMLDocument ? io.contentDocument.document.XMLDocument
							: io.contentDocument.document;
					}
				} catch (e) {
					jQuery.handleError(s, xml, null, e);
				}
				if (xml || isTimeout == "timeout") {
					requestDone = true;
					var status;
					try {
						status = isTimeout != "timeout" ? "success"
							: "error";
						// Make sure that the request was successful or
						// notmodified
						if (status != "error") {
							// process the data (runs the xml through
							// httpData regardless of callback)
							var data = jQuery.uploadHttpData(xml,
								s.dataType);
							if (s.success) {
								// ifa local callback was specified, fire it
								// and pass it the data
								s.success(data, status);
							}
							;
							if (s.global) {
								// Fire the global callback
								jQuery.event.trigger("ajaxSuccess", [ xml,
									s ]);
							}
							;
						} else {
							jQuery.handleError(s, xml, status);
						}

					} catch (e) {
						status = "error";
						jQuery.handleError(s, xml, status, e);
					}
					;
					if (s.global) {
						// The request was completed
						jQuery.event.trigger("ajaxComplete", [ xml, s ]);
					}
					;

					// Handle the global AJAX counter
					if (s.global && !--jQuery.active) {
						jQuery.event.trigger("ajaxStop");
					}
					;
					if (s.complete) {
						s.complete(xml, status);
					}
					;

					jQuery(io).unbind();

					setTimeout(function() {
						try {
							jQuery(io).remove();
							jQuery(form).remove();

						} catch (e) {
							jQuery.handleError(s, xml, null, e);
						}

					}, 100);

					xml = null;

				}
				;
			}
			// Timeout checker
			if (s.timeout > 0) {
				setTimeout(function() {

					if (!requestDone) {
						// Check to see ifthe request is still happening
						uploadCallback("timeout");
					}

				}, s.timeout);
			}
			try {
				var form = jQuery('#' + formId);
				jQuery(form).attr('action', s.url);
				jQuery(form).attr('method', 'POST');
				jQuery(form).attr('target', frameId);
				if (form.encoding) {
					form.encoding = 'multipart/form-data';
				} else {
					form.enctype = 'multipart/form-data';
				}
				alert(form.html());
				alert(form.attr("method"));
				alert(form.attr("enctype"));
				jQuery(form).submit();

			} catch (e) {
				jQuery.handleError(s, xml, null, e);
			}
			if (window.attachEvent) {
				document.getElementById(frameId).attachEvent('onload',
					uploadCallback);
			} else {
				document.getElementById(frameId).addEventListener('load',
					uploadCallback, false);
			}
			return {
				abort : function() {}
			};

		},

		uploadHttpData : function(r, type) {
			var data = !type;
			data = type == "xml" || data ? r.responseXML : r.responseText;
			// ifthe type is "script", eval it in global context
			if (type == "script") {
				jQuery.globalEval(data);
			}

			// Get the JavaScript object, ifJSON is used.
			if (type == "json") {
				eval("data = " + data);
			}

			// evaluate scripts within html
			if (type == "html") {
				jQuery("<div>").html(data).evalScripts();
			}

			return data;
		}
	});